Cache reflection lookups in DynamicDataOperations

src/TestFramework/TestFramework/Attributes/DataSource/DynamicDataOperations.cs

@@ -5,7 +5,7 @@
 
 internal static class DynamicDataOperations
 {
-    private const BindingFlags DeclaredOnlyLookup = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly;
+    private const BindingFlags MemberLookup = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.FlattenHierarchy;
 
     public static IEnumerable<object[]> GetData(Type? dynamicDataDeclaringType, DynamicDataSourceType dynamicDataSourceType, string dynamicDataSourceName, object?[] dynamicDataSourceArguments, MethodInfo methodInfo)
     {
@@ -19,15 +19,15 @@
         {
             case DynamicDataSourceType.AutoDetect:
 #pragma warning disable IDE0045 // Convert to conditional expression - it becomes less readable.
-                if (GetPropertyConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName) is { } dynamicDataPropertyInfo)
+                if (dynamicDataDeclaringType.GetProperty(dynamicDataSourceName, MemberLookup) is { } dynamicDataPropertyInfo)
                 {
                     obj = GetDataFromProperty(dynamicDataPropertyInfo);
                 }
-                else if (GetMethodConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName) is { } dynamicDataMethodInfo)
+                else if (dynamicDataDeclaringType.GetMethod(dynamicDataSourceName, MemberLookup) is { } dynamicDataMethodInfo)
                 {
                     obj = GetDataFromMethod(dynamicDataMethodInfo, dynamicDataSourceArguments);
                 }
-                else if (GetFieldConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName) is { } dynamicDataFieldInfo)
+                else if (dynamicDataDeclaringType.GetField(dynamicDataSourceName, MemberLookup) is { } dynamicDataFieldInfo)
                 {
                     obj = GetDataFromField(dynamicDataFieldInfo);
                 }
@@ -39,21 +39,21 @@
 
                 break;
             case DynamicDataSourceType.Property:
-                PropertyInfo property = GetPropertyConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName)
+                PropertyInfo property = dynamicDataDeclaringType.GetProperty(dynamicDataSourceName, MemberLookup)
                     ?? throw new ArgumentNullException($"{DynamicDataSourceType.Property} {dynamicDataSourceName}");
 
                 obj = GetDataFromProperty(property);
                 break;
 
             case DynamicDataSourceType.Method:
-                MethodInfo method = GetMethodConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName)
+                MethodInfo method = dynamicDataDeclaringType.GetMethod(dynamicDataSourceName, MemberLookup)
                     ?? throw new ArgumentNullException($"{DynamicDataSourceType.Method} {dynamicDataSourceName}");
 
                 obj = GetDataFromMethod(method, dynamicDataSourceArguments);
                 break;
 
             case DynamicDataSourceType.Field:
-                FieldInfo field = GetFieldConsideringInheritance(dynamicDataDeclaringType, dynamicDataSourceName)
+                FieldInfo field = dynamicDataDeclaringType.GetField(dynamicDataSourceName, MemberLookup)
                     ?? throw new ArgumentNullException($"{DynamicDataSourceType.Field} {dynamicDataSourceName}");
 
                 obj = GetDataFromField(field);
@@ -166,57 +166,4 @@
         return false;
     }
 
-    private static FieldInfo? GetFieldConsideringInheritance(Type type, string fieldName)
-    {
-        // NOTE: Don't use GetRuntimeField. It considers inheritance only for instance fields.
-        Type? currentType = type;
-        while (currentType is not null)
-        {
-            FieldInfo? field = currentType.GetField(fieldName, DeclaredOnlyLookup);
-            if (field is not null)
-            {
-                return field;
-            }
-
-            currentType = currentType.BaseType;
-        }
-
-        return null;
-    }
-
-    private static PropertyInfo? GetPropertyConsideringInheritance(Type type, string propertyName)
-    {
-        // NOTE: Don't use GetRuntimeProperty. It considers inheritance only for instance properties.
-        Type? currentType = type;
-        while (currentType is not null)
-        {
-            PropertyInfo? property = currentType.GetProperty(propertyName, DeclaredOnlyLookup);
-            if (property is not null)
-            {
-                return property;
-            }
-
-            currentType = currentType.BaseType;
-        }
-
-        return null;
-    }
-
-    private static MethodInfo? GetMethodConsideringInheritance(Type type, string methodName)
-    {
-        // NOTE: Don't use GetRuntimeMethod. It considers inheritance only for instance methods.
-        Type? currentType = type;
-        while (currentType is not null)
-        {
-            MethodInfo? method = currentType.GetMethod(methodName, DeclaredOnlyLookup);
-            if (method is not null)
-            {
-                return method;
-            }
-
-            currentType = currentType.BaseType;
-        }
-
-        return null;
-    }
 }